Constants and Enumerations in Visual Basic


Updated: July 20, 2015

For the latest documentation on Visual Studio 2017 RC, see Visual Studio 2017 RC Documentation.

Constants are a way to use meaningful names in place of a value that does not change. Constants store values that, as the name implies, remain constant throughout the execution of an application. You can use constants to provide meaningful names, instead of numbers, making your code more readable.

Enumerations provide a convenient way to work with sets of related constants, and to associate constant values with names. For example, you can declare an enumeration for a set of integer constants associated with the days of the week, and then use the names of the days rather than their integer values in your code.

Constants OverviewTopics in this section describe constants and their uses.
Enumerations OverviewTopics in this section describe enumerations and their uses.
Const StatementDescribes the Const statement, which is used to declare constants.
Enum StatementDescribes the Enum statement, which is used to create enumerations.
Option Explicit StatementDescribes the Option Explicit statement, which is used at module level to force explicit declaration of all variables in that module.
Option Infer StatementDescribes the Option Infer statement, which enables the use of local type inference in declaring variables.
Option Strict StatementDescribes the Option Strict statement, which restricts implicit data type conversions to only widening conversions, disallows late binding, and disallows implicit typing that results in an Object type.